– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Mon 07 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Mon 07 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Mon 07 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 22°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Thu night). Wind will be generally light. | ||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | |  |  | | |  | |  | | | | |
light rain | rain shwrs | clear | clear | clear | some clouds | some clouds | some clouds | rain shwrs | rain shwrs | some clouds | cloudy | cloudy | light rain | some clouds | rain shwrs | rain shwrs | |
Cloud base (m) | 850 | 8800 | 9350 | 7150 | 600 | 1800 | 6350 | 850 | 900 | 3700 | 4350 | 2450 | |||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.8 | 0.1 | — | — | — | — | — | — | 0.2 | 0.2 | — | — | — | 0.3 | — | 0.1 | 0.2 |
max °C | 14 | 13 | 17 | 21 | 16 | 20 | 22 | 17 | 14 | 16 | 12 | 13 | 15 | 13 | 17 | 19 | 14 |
min °C | 13 | 11 | 13 | 20 | 15 | 16 | 22 | 14 | 13 | 16 | 10 | 11 | 15 | 13 | 13 | 17 | 11 |
chill °C | 13 | 11 | 13 | 20 | 15 | 16 | 22 | 14 | 13 | 16 | 10 | 11 | 15 | 13 | 13 | 17 | 11 |
Freezing level m | 2900 | 3250 | 3400 | 3550 | 4000 | 4200 | 4150 | 3550 | 2950 | 2800 | 2750 | 2500 | 2650 | 2750 | 2800 | 2750 | 2750 |
 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — |
 | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Some drizzle, heaviest during Mon afternoon. Warm (max 22°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Thu night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.